title: CT imaging of malignant metastatic hemangiopericytoma of the parotid gland with histopathological correlation.
abstract: We report an extremely rare case of malignant hemangiopericytoma (HPC) of the parotid gland and its metastatic spread to lung, liver, and skeletal muscle. Computed tomography (CT) imaging, histopathological and immunohistochemical methods were employed to study the features of malignant HPC and its metastases. CT imaging was helpful to determine the exact location, involvement of adjacent structures and vascularity, as well as evaluating pulmonary, hepatic, peritoneal, and muscular metastases. Immunohistochemical and histopatholgical features of the primary tumor as well as the metastases were consistent with the diagnosis of malignant HPC.
authors.affiliation: Department of Oncologic Imaging, National Cancer Centre, Singapore. ravikanthbalaji@gmail.com
authors.forename: Ravikanth
authors.initials: R
authors.lastname: Balaji
authors.forename: James B
authors.initials: JB
authors.lastname: Khoo
authors.forename: Kesavan
authors.initials: K
authors.lastname: Sittampalam
authors.forename: Soo K
authors.initials: SK
authors.lastname: Chee
mesh_terms: D005260:Female; D006393:Hemangiopericytoma / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery; D006801:Humans; D008113:Liver Neoplasms / Q000473:pathology / Q000556:secondary* / Q000601:surgery; D008175:Lung Neoplasms / Q000473:pathology / Q000556:secondary* / Q000601:surgery; D008875:Middle Aged; D009362:Neoplasm Metastasis; D010307:Parotid Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome